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Revision 1.105 by root, Tue Jan 31 21:00:26 2006 UTC

…		…
16	=head1 DESCRIPTION	16	=head1 DESCRIPTION
17		17
18	This document contains the FAQ, the RXVT TECHNICAL REFERENCE documenting	18	This document contains the FAQ, the RXVT TECHNICAL REFERENCE documenting
19	all escape sequences, and other background information.	19	all escape sequences, and other background information.
20		20
21	The newest version of this document is	21	The newest version of this document is also available on the World Wide Web at
22	also available on the World Wide Web at
23	L<http://cvs.schmorp.de/browse/*checkout*/rxvt-unicode/doc/rxvt.7.html>.	22	L<http://cvs.schmorp.de/browse/*checkout*/rxvt-unicode/doc/rxvt.7.html>.
24		23
25	=head1 FREQUENTLY ASKED QUESTIONS	24	=head1 RXVT-UNICODE/URXVT FREQUENTLY ASKED QUESTIONS
26		25
27	=over 4
28		26
29	=item The new selection selects pieces that are too big, how can I select	27	=head2 Meta, Features & Commandline Issues
30	single words?
31		28
32	Yes. For example, if you want to select alphanumeric words, you can use	29	=head3 My question isn't answered here, can I ask a human?
33	the following resource:
34		30
35	URxvt.selection.pattern-0: ([[:word:]]+)	31	Before sending me mail, you could go to IRC: C<irc.freenode.net>,
		32	channel C<#rxvt-unicode> has some rxvt-unicode enthusiasts that might be
		33	interested in learning about new and exciting problems (but not FAQs :).
36		34
37	If you click more than twice, the selection will be extended	35	=head3 Does it support tabs, can I have a tabbed rxvt-unicode?
38	more and more.
39		36
40	To get a selection that is very similar to the old code, try this pattern:	37	Beginning with version 7.3, there is a perl extension that implements a
		38	simple tabbed terminal. It is installed by default, so any of these should
		39	give you tabs:
41		40
42	URxvt.selection.pattern-0: ([^"&'()*,;<=>?@[\\\\]^`{|})]+)	41	@@URXVT_NAME@@ -pe tabbed
43		42
44	Please also note that the I<LeftClick Shift-LeftClik> combination also	43	URxvt.perl-ext-common: default,tabbed
45	selects words like the old code.
46		44
47	=item I don't like the new selection/popups/hotkeys/perl, how do I	45	It will also work fine with tabbing functionality of many window managers
48	change/disable it?	46	or similar tabbing programs, and its embedding-features allow it to be
		47	embedded into other programs, as witnessed by F<doc/rxvt-tabbed> or
		48	the upcoming C<Gtk2::URxvt> perl module, which features a tabbed urxvt
		49	(murxvt) terminal as an example embedding application.
49		50
50	You can disable the perl extension completely by setting the	51	=head3 How do I know which rxvt-unicode version I'm using?
51	B<perl-ext-common> resource to the empty string, which also keeps
52	rxvt-unicode from initialising perl, saving memory.
53		52
54	If you only want to disable specific features, you first have to	53	The version number is displayed with the usage (-h). Also the escape
55	identify which perl extension is responsible. For this, read the section	54	sequence C<ESC [ 8 n> sets the window title to the version number. When
56	B<PREPACKAGED EXTENSIONS> in the @@RXVT_NAME@@perl(3) manpage. For	55	using the @@URXVT_NAME@@c client, the version displayed is that of the
57	example, to disable the B<selection-popup> and B<option-popup>, specify	56	daemon.
58	this B<perl-ext-common> resource:
59		57
60	URxvt.perl-ext-common: default,-selection-popup,-option-popup	58	=head3 Rxvt-unicode uses gobs of memory, how can I reduce that?
61		59
62	This will keep the default extensions, but disable the two popup	60	Rxvt-unicode tries to obey the rule of not charging you for something you
63	extensions. Some extensions can also be configured, for example,	61	don't use. One thing you should try is to configure out all settings that
64	scrollback search mode is triggered by B<M-s>. You can move it to any	62	you don't need, for example, Xft support is a resource hog by design,
65	other combination either by setting the B<searchable-scrollback> resource:	63	when used. Compiling it out ensures that no Xft font will be loaded
		64	accidentally when rxvt-unicode tries to find a font for your characters.
66		65
67	URxvt.searchable-scrollback: CM-s	66	Also, many people (me included) like large windows and even larger
		67	scrollback buffers: Without C<--enable-unicode3>, rxvt-unicode will use
		68	6 bytes per screen cell. For a 160x?? window this amounts to almost a
		69	kilobyte per line. A scrollback buffer of 10000 lines will then (if full)
		70	use 10 Megabytes of memory. With C<--enable-unicode3> it gets worse, as
		71	rxvt-unicode then uses 8 bytes per screen cell.
68		72
		73	=head3 How can I start @@URXVT_NAME@@d in a race-free way?
		74
		75	Try C<@@URXVT_NAME@@d -f -o>, which tells @@URXVT_NAME@@d to open the
		76	display, create the listening socket and then fork.
		77
		78	=head3 How do I distinguish wether I'm running rxvt-unicode or a regular xterm? I need this to decide about setting colors etc.
		79
		80	The original rxvt and rxvt-unicode always export the variable "COLORTERM",
		81	so you can check and see if that is set. Note that several programs, JED,
		82	slrn, Midnight Commander automatically check this variable to decide
		83	whether or not to use color.
		84
		85	=head3 How do I set the correct, full IP address for the DISPLAY variable?
		86
		87	If you've compiled rxvt-unicode with DISPLAY_IS_IP and have enabled
		88	insecure mode then it is possible to use the following shell script
		89	snippets to correctly set the display. If your version of rxvt-unicode
		90	wasn't also compiled with ESCZ_ANSWER (as assumed in these snippets) then
		91	the COLORTERM variable can be used to distinguish rxvt-unicode from a
		92	regular xterm.
		93
		94	Courtesy of Chuck Blake <cblake@BBN.COM> with the following shell script
		95	snippets:
		96
		97	# Bourne/Korn/POSIX family of shells:
		98	[ ${TERM:-foo} = foo ] && TERM=xterm # assume an xterm if we don't know
		99	if [ ${TERM:-foo} = xterm ]; then
		100	stty -icanon -echo min 0 time 15 # see if enhanced rxvt or not
		101	echo -n '^[Z'
		102	read term_id
		103	stty icanon echo
		104	if [ ""${term_id} = '^[[?1;2C' -a ${DISPLAY:-foo} = foo ]; then
		105	echo -n '^[[7n' # query the rxvt we are in for the DISPLAY string
		106	read DISPLAY # set it in our local shell
		107	fi
		108	fi
		109
		110	=head3 How do I compile the manual pages on my own?
		111
		112	You need to have a recent version of perl installed as F</usr/bin/perl>,
		113	one that comes with F<pod2man>, F<pod2text> and F<pod2html>. Then go to
		114	the doc subdirectory and enter C<make alldoc>.
		115
69	=item Isn't rxvt supposed to be small? Don't all those features bloat?	116	=head3 Isn't rxvt-unicode supposed to be small? Don't all those features bloat?
70		117
71	I often get asked about this, and I think, no, they didn't cause extra	118	I often get asked about this, and I think, no, they didn't cause extra
72	bloat. If you compare a minimal rxvt and a minimal urxvt, you can see	119	bloat. If you compare a minimal rxvt and a minimal urxvt, you can see
73	that the urxvt binary is larger (due to some encoding tables always being	120	that the urxvt binary is larger (due to some encoding tables always being
74	compiled in), but it actually uses less memory (RSS) after startup. Even	121	compiled in), but it actually uses less memory (RSS) after startup. Even
…		…
106	(21152k + extra 4204k in separate processes) or konsole (22200k + extra	153	(21152k + extra 4204k in separate processes) or konsole (22200k + extra
107	43180k in daemons that stay around after exit, plus half a minute of	154	43180k in daemons that stay around after exit, plus half a minute of
108	startup time, including the hundreds of warnings it spits out), it fares	155	startup time, including the hundreds of warnings it spits out), it fares
109	extremely well *g*.	156	extremely well *g*.
110		157
111	=item Why C++, isn't that unportable/bloated/uncool?	158	=head3 Why C++, isn't that unportable/bloated/uncool?
112		159
113	Is this a question? :) It comes up very often. The simple answer is: I had	160	Is this a question? :) It comes up very often. The simple answer is: I had
114	to write it, and C++ allowed me to write and maintain it in a fraction	161	to write it, and C++ allowed me to write and maintain it in a fraction
115	of the time and effort (which is a scarce resource for me). Put even	162	of the time and effort (which is a scarce resource for me). Put even
116	shorter: It simply wouldn't exist without C++.	163	shorter: It simply wouldn't exist without C++.
…		…
140	/lib64/ld-linux-x86-64.so.2 (0x00002aaaaaaab000)	187	/lib64/ld-linux-x86-64.so.2 (0x00002aaaaaaab000)
141		188
142	No large bloated libraries (of course, none were linked in statically),	189	No large bloated libraries (of course, none were linked in statically),
143	except maybe libX11 :)	190	except maybe libX11 :)
144		191
145	=item Does it support tabs, can I have a tabbed rxvt-unicode?
146		192
147	rxvt-unicode does not directly support tabs. It will work fine with	193	=head2 Rendering, Font & Look and Feel Issues
148	tabbing functionality of many window managers or similar tabbing programs,
149	and its embedding-features allow it to be embedded into other programs,
150	as witnessed by F<doc/rxvt-tabbed> or the upcoming C<Gtk2::URxvt> perl
151	module, which features a tabbed urxvt (murxvt) terminal as an example
152	embedding application.
153		194
154	=item How do I know which rxvt-unicode version I'm using?	195	=head3 I can't get transparency working, what am I doing wrong?
155		196
156	The version number is displayed with the usage (-h). Also the escape	197	First of all, transparency isn't officially supported in rxvt-unicode, so
157	sequence C<ESC [ 8 n> sets the window title to the version number. When	198	you are mostly on your own. Do not bug the author about it (but you may
158	using the @@RXVT_NAME@@c client, the version displayed is that of the	199	bug everybody else). Also, if you can't get it working consider it a rite
159	daemon.	200	of passage: ... and you failed.
160		201
161	=item I am using Debian GNU/Linux and have a problem...	202	Here are four ways to get transparency. B<Do> read the manpage and option
		203	descriptions for the programs mentioned and rxvt-unicode. Really, do it!
162		204
163	The Debian GNU/Linux package of rxvt-unicode in sarge contains large	205	1. Use inheritPixmap:
164	patches that considerably change the behaviour of rxvt-unicode. Before
165	reporting a bug to the original rxvt-unicode author please download and
166	install the genuine version (L<http://software.schmorp.de#rxvt-unicode>)
167	and try to reproduce the problem. If you cannot, chances are that the
168	problems are specific to Debian GNU/Linux, in which case it should be
169	reported via the Debian Bug Tracking System (use C<reportbug> to report
170	the bug).
171		206
172	For other problems that also affect the Debian package, you can and	207	Esetroot wallpaper.jpg
173	probably should use the Debian BTS, too, because, after all, it's also a	208	@@URXVT_NAME@@ -ip -tint red -sh 40
174	bug in the Debian version and it serves as a reminder for other users that
175	might encounter the same issue.
176		209
177	=item I am maintaining rxvt-unicode for distribution/OS XXX, any recommendation?	210	That works. If you think it doesn't, you lack transparency and tinting
		211	support, or you are unable to read.
178		212
179	You should build one binary with the default options. F<configure>	213	2. Use a simple pixmap and emulate pseudo-transparency. This enables you
180	now enables most useful options, and the trend goes to making them	214	to use effects other than tinting and shading: Just shade/tint/whatever
181	runtime-switchable, too, so there is usually no drawback to enbaling them,	215	your picture with gimp or any other tool:
182	except higher disk and possibly memory usage. The perl interpreter should
183	be enabled, as important functionality (menus, selection, likely more in
184	the future) depends on it.
185		216
186	You should not overwrite the C<perl-ext-common> snd C<perl-ext> resources	217	convert wallpaper.jpg -blur 20x20 -modulate 30 background.xpm
187	system-wide (except maybe with C<defaults>). This will result in useful	218	@@URXVT_NAME@@ -pixmap background.xpm -pe automove-background
188	behaviour. If your distribution aims at low memory, add an empty
189	C<perl-ext-common> resource to the app-defaults file. This will keep the
190	perl interpreter disabled until the user enables it.
191		219
192	If you can/want build more binaries, I recommend building a minimal	220	That works. If you think it doesn't, you lack XPM and Perl support, or you
193	one with C<--disable-everything> (very useful) and a maximal one with	221	are unable to read.
194	C<--enable-everything> (less useful, it will be very big due to a lot of
195	encodings built-in that increase download times and are rarely used).
196		222
197	=item I need to make it setuid/setgid to support utmp/ptys on my OS, is this safe?	223	3. Use an ARGB visual:
198		224
199	Likely not. While I honestly try to make it secure, and am probably not	225	@@URXVT_NAME@@ -depth 32 -fg grey90 -bg rgba:0000/0000/4444/cccc
200	bad at it, I think it is simply unreasonable to expect all of freetype
201	+ fontconfig + xft + xlib + perl + ... + rxvt-unicode itself to all be
202	secure. Also, rxvt-unicode disables some options when it detects that it
203	runs setuid or setgid, which is not nice. Besides, with the embedded perl
204	interpreter the possibility for security problems easily multiplies.
205		226
206	Elevated privileges are only required for utmp and pty operations on some	227	This requires XFT support, and the support of your X-server. If that
207	systems (for example, GNU/Linux doesn't need any extra privileges for	228	doesn't work for you, blame Xorg and Keith Packard. ARGB visuals aren't
208	ptys, but some need it for utmp support). It is planned to mvoe this into	229	there yet, no matter what they claim. Rxvt-Unicode contains the neccessary
209	a forked handler process, but this is not yet done.	230	bugfixes and workarounds for Xft and Xlib to make it work, but that
		231	doesn't mean that your WM has the required kludges in place.
210		232
211	So, while setuid/setgid operation is supported and not a problem on your	233	4. Use xcompmgr and let it do the job:
212	typical single-user-no-other-logins unix desktop, always remember that
213	its an awful lot of code, most of which isn't checked for security issues
214	regularly.
215		234
		235	xprop -frame -f _NET_WM_WINDOW_OPACITY 32c \
		236	-set _NET_WM_WINDOW_OPACITY 0xc0000000
		237
		238	Then click on a window you want to make transparent. Replace C<0xc0000000>
		239	by other values to change the degree of opacity. If it doesn't work and
		240	your server crashes, you got to keep the pieces.
		241
		242	=head3 Why do some chinese characters look so different than others?
		243
		244	This is because there is a difference between script and language --
		245	rxvt-unicode does not know which language the text that is output is,
		246	as it only knows the unicode character codes. If rxvt-unicode first
		247	sees a japanese/chinese character, it might choose a japanese font for
		248	display. Subsequent japanese characters will use that font. Now, many
		249	chinese characters aren't represented in japanese fonts, so when the first
		250	non-japanese character comes up, rxvt-unicode will look for a chinese font
		251	-- unfortunately at this point, it will still use the japanese font for
		252	chinese characters that are also in the japanese font.
		253
		254	The workaround is easy: just tag a chinese font at the end of your font
		255	list (see the previous question). The key is to view the font list as
		256	a preference list: If you expect more japanese, list a japanese font
		257	first. If you expect more chinese, put a chinese font first.
		258
		259	In the future it might be possible to switch language preferences at
		260	runtime (the internal data structure has no problem with using different
		261	fonts for the same character at the same time, but no interface for this
		262	has been designed yet).
		263
		264	Until then, you might get away with switching fonts at runtime (see L<Can
		265	I switch the fonts at runtime?> later in this document).
		266
		267	=head3 Why does rxvt-unicode sometimes leave pixel droppings?
		268
		269	Most fonts were not designed for terminal use, which means that character
		270	size varies a lot. A font that is otherwise fine for terminal use might
		271	contain some characters that are simply too wide. Rxvt-unicode will avoid
		272	these characters. For characters that are just "a bit" too wide a special
		273	"careful" rendering mode is used that redraws adjacent characters.
		274
		275	All of this requires that fonts do not lie about character sizes,
		276	however: Xft fonts often draw glyphs larger than their acclaimed bounding
		277	box, and rxvt-unicode has no way of detecting this (the correct way is to
		278	ask for the character bounding box, which unfortunately is wrong in these
		279	cases).
		280
		281	It's not clear (to me at least), wether this is a bug in Xft, freetype,
		282	or the respective font. If you encounter this problem you might try using
		283	the C<-lsp> option to give the font more height. If that doesn't work, you
		284	might be forced to use a different font.
		285
		286	All of this is not a problem when using X11 core fonts, as their bounding
		287	box data is correct.
		288
		289	=head3 How can I keep rxvt-unicode from using reverse video so much?
		290
		291	First of all, make sure you are running with the right terminal settings
		292	(C<TERM=rxvt-unicode>), which will get rid of most of these effects. Then
		293	make sure you have specified colours for italic and bold, as otherwise
		294	rxvt-unicode might use reverse video to simulate the effect:
		295
		296	URxvt.colorBD: white
		297	URxvt.colorIT: green
		298
		299	=head3 Some programs assume totally weird colours (red instead of blue), how can I fix that?
		300
		301	For some unexplainable reason, some rare programs assume a very weird
		302	colour palette when confronted with a terminal with more than the standard
		303	8 colours (rxvt-unicode supports 88). The right fix is, of course, to fix
		304	these programs not to assume non-ISO colours without very good reasons.
		305
		306	In the meantime, you can either edit your C<rxvt-unicode> terminfo
		307	definition to only claim 8 colour support or use C<TERM=rxvt>, which will
		308	fix colours but keep you from using other rxvt-unicode features.
		309
		310	=head3 Can I switch the fonts at runtime?
		311
		312	Yes, using an escape sequence. Try something like this, which has the same
		313	effect as using the C<-fn> switch, and takes effect immediately:
		314
		315	printf '\e]50;%s\007' "9x15bold,xft:Kochi Gothic"
		316
		317	This is useful if you e.g. work primarily with japanese (and prefer a
		318	japanese font), but you have to switch to chinese temporarily, where
		319	japanese fonts would only be in your way.
		320
		321	You can think of this as a kind of manual ISO-2022 switching.
		322
		323	=head3 Why do italic characters look as if clipped?
		324
		325	Many fonts have difficulties with italic characters and hinting. For
		326	example, the otherwise very nicely hinted font C<xft:Bitstream Vera Sans
		327	Mono> completely fails in it's italic face. A workaround might be to
		328	enable freetype autohinting, i.e. like this:
		329
		330	URxvt.italicFont: xft:Bitstream Vera Sans Mono:italic:autohint=true
		331	URxvt.boldItalicFont: xft:Bitstream Vera Sans Mono:bold:italic:autohint=true
		332
		333	=head3 Can I speed up Xft rendering somehow?
		334
		335	Yes, the most obvious way to speed it up is to avoid Xft entirely, as
		336	it is simply slow. If you still want Xft fonts you might try to disable
		337	antialiasing (by appending C<:antialias=false>), which saves lots of
		338	memory and also speeds up rendering considerably.
		339
		340	=head3 Rxvt-unicode doesn't seem to anti-alias its fonts, what is wrong?
		341
		342	Rxvt-unicode will use whatever you specify as a font. If it needs to
		343	fall back to it's default font search list it will prefer X11 core
		344	fonts, because they are small and fast, and then use Xft fonts. It has
		345	antialiasing disabled for most of them, because the author thinks they
		346	look best that way.
		347
		348	If you want antialiasing, you have to specify the fonts manually.
		349
		350	=head3 What's with this bold/blink stuff?
		351
		352	If no bold colour is set via C<colorBD:>, bold will invert text using the
		353	standard foreground colour.
		354
		355	For the standard background colour, blinking will actually make the
		356	text blink when compiled with C<--enable-blinking>. with standard
		357	colours. Without C<--enable-blinking>, the blink attribute will be
		358	ignored.
		359
		360	On ANSI colours, bold/blink attributes are used to set high-intensity
		361	foreground/background colors.
		362
		363	color0-7 are the low-intensity colors.
		364
		365	color8-15 are the corresponding high-intensity colors.
		366
		367	=head3 I don't like the screen colors. How do I change them?
		368
		369	You can change the screen colors at run-time using F<~/.Xdefaults>
		370	resources (or as long-options).
		371
		372	Here are values that are supposed to resemble a VGA screen,
		373	including the murky brown that passes for low-intensity yellow:
		374
		375	URxvt.color0: #000000
		376	URxvt.color1: #A80000
		377	URxvt.color2: #00A800
		378	URxvt.color3: #A8A800
		379	URxvt.color4: #0000A8
		380	URxvt.color5: #A800A8
		381	URxvt.color6: #00A8A8
		382	URxvt.color7: #A8A8A8
		383
		384	URxvt.color8: #000054
		385	URxvt.color9: #FF0054
		386	URxvt.color10: #00FF54
		387	URxvt.color11: #FFFF54
		388	URxvt.color12: #0000FF
		389	URxvt.color13: #FF00FF
		390	URxvt.color14: #00FFFF
		391	URxvt.color15: #FFFFFF
		392
		393	And here is a more complete set of non-standard colors described (not by
		394	me) as "pretty girly".
		395
		396	URxvt.cursorColor: #dc74d1
		397	URxvt.pointerColor: #dc74d1
		398	URxvt.background: #0e0e0e
		399	URxvt.foreground: #4ad5e1
		400	URxvt.color0: #000000
		401	URxvt.color8: #8b8f93
		402	URxvt.color1: #dc74d1
		403	URxvt.color9: #dc74d1
		404	URxvt.color2: #0eb8c7
		405	URxvt.color10: #0eb8c7
		406	URxvt.color3: #dfe37e
		407	URxvt.color11: #dfe37e
		408	URxvt.color5: #9e88f0
		409	URxvt.color13: #9e88f0
		410	URxvt.color6: #73f7ff
		411	URxvt.color14: #73f7ff
		412	URxvt.color7: #e1dddd
		413	URxvt.color15: #e1dddd
		414
		415	=head3 Why do some characters look so much different than others?
		416
		417	See next entry.
		418
		419	=head3 How does rxvt-unicode choose fonts?
		420
		421	Most fonts do not contain the full range of Unicode, which is
		422	fine. Chances are that the font you (or the admin/package maintainer of
		423	your system/os) have specified does not cover all the characters you want
		424	to display.
		425
		426	B<rxvt-unicode> makes a best-effort try at finding a replacement
		427	font. Often the result is fine, but sometimes the chosen font looks
		428	bad/ugly/wrong. Some fonts have totally strange characters that don't
		429	resemble the correct glyph at all, and rxvt-unicode lacks the artificial
		430	intelligence to detect that a specific glyph is wrong: it has to believe
		431	the font that the characters it claims to contain indeed look correct.
		432
		433	In that case, select a font of your taste and add it to the font list,
		434	e.g.:
		435
		436	@@URXVT_NAME@@ -fn basefont,font2,font3...
		437
		438	When rxvt-unicode sees a character, it will first look at the base
		439	font. If the base font does not contain the character, it will go to the
		440	next font, and so on. Specifying your own fonts will also speed up this
		441	search and use less resources within rxvt-unicode and the X-server.
		442
		443	The only limitation is that none of the fonts may be larger than the base
		444	font, as the base font defines the terminal character cell size, which
		445	must be the same due to the way terminals work.
		446
		447
		448	=head2 Keyboard, Mouse & User Interaction
		449
		450	=head3 The new selection selects pieces that are too big, how can I select single words?
		451
		452	If you want to select e.g. alphanumeric words, you can use the following
		453	setting:
		454
		455	URxvt.selection.pattern-0: ([[:word:]]+)
		456
		457	If you click more than twice, the selection will be extended
		458	more and more.
		459
		460	To get a selection that is very similar to the old code, try this pattern:
		461
		462	URxvt.selection.pattern-0: ([^"&'()*,;<=>?@[\\\\]^`{|})]+)
		463
		464	Please also note that the I<LeftClick Shift-LeftClik> combination also
		465	selects words like the old code.
		466
		467	=head3 I don't like the new selection/popups/hotkeys/perl, how do I change/disable it?
		468
		469	You can disable the perl extension completely by setting the
		470	B<perl-ext-common> resource to the empty string, which also keeps
		471	rxvt-unicode from initialising perl, saving memory.
		472
		473	If you only want to disable specific features, you first have to
		474	identify which perl extension is responsible. For this, read the section
		475	B<PREPACKAGED EXTENSIONS> in the @@URXVT_NAME@@perl(3) manpage. For
		476	example, to disable the B<selection-popup> and B<option-popup>, specify
		477	this B<perl-ext-common> resource:
		478
		479	URxvt.perl-ext-common: default,-selection-popup,-option-popup
		480
		481	This will keep the default extensions, but disable the two popup
		482	extensions. Some extensions can also be configured, for example,
		483	scrollback search mode is triggered by B<M-s>. You can move it to any
		484	other combination either by setting the B<searchable-scrollback> resource:
		485
		486	URxvt.searchable-scrollback: CM-s
		487
		488	=head3 The cursor moves when selecting text in the current input line, how do I switch this off?
		489
		490	See next entry.
		491
		492	=head3 During rlogin/ssh/telnet/etc. sessions, clicking near the cursor outputs strange escape sequences, how do I fix this?
		493
		494	These are caused by the C<readline> perl extension. Under normal
		495	circumstances, it will move your cursor around when you click into the
		496	line that contains it. It tries hard not to do this at the wrong moment,
		497	but when running a program that doesn't parse cursor movements or in some
		498	cases during rlogin sessions, it fails to detect this properly.
		499
		500	You can permamently switch this feature off by disabling the C<readline>
		501	extension:
		502
		503	URxvt.perl-ext-common: default,-readline
		504
		505	=head3 My numerical keypad acts weird and generates differing output?
		506
		507	Some Debian GNUL/Linux users seem to have this problem, although no
		508	specific details were reported so far. It is possible that this is caused
		509	by the wrong C<TERM> setting, although the details of wether and how
		510	this can happen are unknown, as C<TERM=rxvt> should offer a compatible
		511	keymap. See the answer to the previous question, and please report if that
		512	helped.
		513
		514	=head3 My Compose (Multi_key) key is no longer working.
		515
		516	The most common causes for this are that either your locale is not set
		517	correctly, or you specified a B<preeditStyle> that is not supported by
		518	your input method. For example, if you specified B<OverTheSpot> and
		519	your input method (e.g. the default input method handling Compose keys)
		520	does not support this (for instance because it is not visual), then
		521	rxvt-unicode will continue without an input method.
		522
		523	In this case either do not specify a B<preeditStyle> or specify more than
		524	one pre-edit style, such as B<OverTheSpot,Root,None>.
		525
		526	=head3 I cannot type C<Ctrl-Shift-2> to get an ASCII NUL character due to ISO 14755
		527
		528	Either try C<Ctrl-2> alone (it often is mapped to ASCII NUL even on
		529	international keyboards) or simply use ISO 14755 support to your
		530	advantage, typing <Ctrl-Shift-0> to get a ASCII NUL. This works for other
		531	codes, too, such as C<Ctrl-Shift-1-d> to type the default telnet escape
		532	character and so on.
		533
		534	=head3 Mouse cut/paste suddenly no longer works.
		535
		536	Make sure that mouse reporting is actually turned off since killing
		537	some editors prematurely may leave the mouse in mouse report mode. I've
		538	heard that tcsh may use mouse reporting unless it otherwise specified. A
		539	quick check is to see if cut/paste works when the Alt or Shift keys are
		540	depressed.
		541
		542	=head3 What's with the strange Backspace/Delete key behaviour?
		543
		544	Assuming that the physical Backspace key corresponds to the
		545	BackSpace keysym (not likely for Linux ... see the following
		546	question) there are two standard values that can be used for
		547	Backspace: C<^H> and C<^?>.
		548
		549	Historically, either value is correct, but rxvt-unicode adopts the debian
		550	policy of using C<^?> when unsure, because it's the one only only correct
		551	choice :).
		552
		553	Rxvt-unicode tries to inherit the current stty settings and uses the value
		554	of `erase' to guess the value for backspace. If rxvt-unicode wasn't
		555	started from a terminal (say, from a menu or by remote shell), then the
		556	system value of `erase', which corresponds to CERASE in <termios.h>, will
		557	be used (which may not be the same as your stty setting).
		558
		559	For starting a new rxvt-unicode:
		560
		561	# use Backspace = ^H
		562	$ stty erase ^H
		563	$ @@URXVT_NAME@@
		564
		565	# use Backspace = ^?
		566	$ stty erase ^?
		567	$ @@URXVT_NAME@@
		568
		569	Toggle with C<ESC [ 36 h> / C<ESC [ 36 l>.
		570
		571	For an existing rxvt-unicode:
		572
		573	# use Backspace = ^H
		574	$ stty erase ^H
		575	$ echo -n "^[[36h"
		576
		577	# use Backspace = ^?
		578	$ stty erase ^?
		579	$ echo -n "^[[36l"
		580
		581	This helps satisfy some of the Backspace discrepancies that occur, but
		582	if you use Backspace = C<^H>, make sure that the termcap/terminfo value
		583	properly reflects that.
		584
		585	The Delete key is a another casualty of the ill-defined Backspace problem.
		586	To avoid confusion between the Backspace and Delete keys, the Delete
		587	key has been assigned an escape sequence to match the vt100 for Execute
		588	(C<ESC [ 3 ~>) and is in the supplied termcap/terminfo.
		589
		590	Some other Backspace problems:
		591
		592	some editors use termcap/terminfo,
		593	some editors (vim I'm told) expect Backspace = ^H,
		594	GNU Emacs (and Emacs-like editors) use ^H for help.
		595
		596	Perhaps someday this will all be resolved in a consistent manner.
		597
		598	=head3 I don't like the key-bindings. How do I change them?
		599
		600	There are some compile-time selections available via configure. Unless
		601	you have run "configure" with the C<--disable-resources> option you can
		602	use the `keysym' resource to alter the keystrings associated with keysyms.
		603
		604	Here's an example for a URxvt session started using C<@@URXVT_NAME@@ -name URxvt>
		605
		606	URxvt.keysym.Home: \033[1~
		607	URxvt.keysym.End: \033[4~
		608	URxvt.keysym.C-apostrophe: \033<C-'>
		609	URxvt.keysym.C-slash: \033<C-/>
		610	URxvt.keysym.C-semicolon: \033<C-;>
		611	URxvt.keysym.C-grave: \033<C-`>
		612	URxvt.keysym.C-comma: \033<C-,>
		613	URxvt.keysym.C-period: \033<C-.>
		614	URxvt.keysym.C-0x60: \033<C-`>
		615	URxvt.keysym.C-Tab: \033<C-Tab>
		616	URxvt.keysym.C-Return: \033<C-Return>
		617	URxvt.keysym.S-Return: \033<S-Return>
		618	URxvt.keysym.S-space: \033<S-Space>
		619	URxvt.keysym.M-Up: \033<M-Up>
		620	URxvt.keysym.M-Down: \033<M-Down>
		621	URxvt.keysym.M-Left: \033<M-Left>
		622	URxvt.keysym.M-Right: \033<M-Right>
		623	URxvt.keysym.M-C-0: list \033<M-C- 0123456789 >
		624	URxvt.keysym.M-C-a: list \033<M-C- abcdefghijklmnopqrstuvwxyz >
		625	URxvt.keysym.F12: command:\033]701;zh_CN.GBK\007
		626
		627	See some more examples in the documentation for the B<keysym> resource.
		628
		629	=head3 I'm using keyboard model XXX that has extra Prior/Next/Insert keys. How do I make use of them? For example, the Sun Keyboard type 4 has the following map
		630
		631	KP_Insert == Insert
		632	F22 == Print
		633	F27 == Home
		634	F29 == Prior
		635	F33 == End
		636	F35 == Next
		637
		638	Rather than have rxvt-unicode try to accommodate all the various possible
		639	keyboard mappings, it is better to use `xmodmap' to remap the keys as
		640	required for your particular machine.
		641
		642
		643
		644	=head2 Terminal Configuration
		645
		646	=head3 Why doesn't rxvt-unicode read my resources?
		647
		648	Well, why, indeed? It does, in a way very similar to other X
		649	applications. Most importantly, this means that if you or your OS loads
		650	resources into the X display (the right way to do it), rxvt-unicode will
		651	ignore any resource files in your home directory. It will only read
		652	F<$HOME/.Xdefaults> when no resources are attached to the display.
		653
		654	If you have or use an F<$HOME/.Xresources> file, chances are that
		655	resources are loaded into your X-server. In this case, you have to
		656	re-login after every change (or run F<xrdb -merge $HOME/.Xresources>).
		657
		658	Also consider the form resources have to use:
		659
		660	URxvt.resource: value
		661
		662	If you want to use another form (there are lots of different ways of
		663	specifying resources), make sure you understand wether and why it
		664	works. If unsure, use the form above.
		665
216	=item When I log-in to another system it tells me about missing terminfo data?	666	=head3 When I log-in to another system it tells me about missing terminfo data?
217		667
218	The terminal description used by rxvt-unicode is not as widely available	668	The terminal description used by rxvt-unicode is not as widely available
219	as that for xterm, or even rxvt (for which the same problem often arises).	669	as that for xterm, or even rxvt (for which the same problem often arises).
220		670
221	The correct solution for this problem is to install the terminfo, this can	671	The correct solution for this problem is to install the terminfo, this can
…		…
237	resource to set it:	687	resource to set it:
238		688
239	URxvt.termName: rxvt	689	URxvt.termName: rxvt
240		690
241	If you don't plan to use B<rxvt> (quite common...) you could also replace	691	If you don't plan to use B<rxvt> (quite common...) you could also replace
242	the rxvt terminfo file with the rxvt-unicode one.	692	the rxvt terminfo file with the rxvt-unicode one and use C<TERM=rxvt>.
243		693
244	=item C<tic> outputs some error when compiling the terminfo entry.	694	=head3 C<tic> outputs some error when compiling the terminfo entry.
245		695
246	Most likely it's the empty definition for C<enacs=>. Just replace it by	696	Most likely it's the empty definition for C<enacs=>. Just replace it by
247	C<enacs=\E[0@> and try again.	697	C<enacs=\E[0@> and try again.
248		698
249	=item C<bash>'s readline does not work correctly under @@RXVT_NAME@@.	699	=head3 C<bash>'s readline does not work correctly under @@URXVT_NAME@@.
250		700
		701	See next entry.
		702
251	=item I need a termcap file entry.	703	=head3 I need a termcap file entry.
252		704
253	One reason you might want this is that some distributions or operating	705	One reason you might want this is that some distributions or operating
254	systems still compile some programs using the long-obsoleted termcap	706	systems still compile some programs using the long-obsoleted termcap
255	library (Fedora Core's bash is one example) and rely on a termcap entry	707	library (Fedora Core's bash is one example) and rely on a termcap entry
256	for C<rxvt-unicode>.	708	for C<rxvt-unicode>.
…		…
282	:sc=\E7:se=\E[27m:sf=^J:so=\E[7m:sr=\EM:st=\EH:ta=^I:\	734	:sc=\E7:se=\E[27m:sf=^J:so=\E[7m:sr=\EM:st=\EH:ta=^I:\
283	:te=\E[r\E[?1049l:ti=\E[?1049h:ue=\E[24m:up=\E[A:\	735	:te=\E[r\E[?1049l:ti=\E[?1049h:ue=\E[24m:up=\E[A:\
284	:us=\E[4m:vb=\E[?5h\E[?5l:ve=\E[?25h:vi=\E[?25l:\	736	:us=\E[4m:vb=\E[?5h\E[?5l:ve=\E[?25h:vi=\E[?25l:\
285	:vs=\E[?25h:	737	:vs=\E[?25h:
286		738
287	=item Why does C<ls> no longer have coloured output?	739	=head3 Why does C<ls> no longer have coloured output?
288		740
289	The C<ls> in the GNU coreutils unfortunately doesn't use terminfo to	741	The C<ls> in the GNU coreutils unfortunately doesn't use terminfo to
290	decide wether a terminal has colour, but uses it's own configuration	742	decide wether a terminal has colour, but uses it's own configuration
291	file. Needless to say, C<rxvt-unicode> is not in it's default file (among	743	file. Needless to say, C<rxvt-unicode> is not in it's default file (among
292	with most other terminals supporting colour). Either add:	744	with most other terminals supporting colour). Either add:
…		…
297		749
298	alias ls='ls --color=auto'	750	alias ls='ls --color=auto'
299		751
300	to your C<.profile> or C<.bashrc>.	752	to your C<.profile> or C<.bashrc>.
301		753
302	=item Why doesn't vim/emacs etc. use the 88 colour mode?	754	=head3 Why doesn't vim/emacs etc. use the 88 colour mode?
303		755
		756	See next entry.
		757
304	=item Why doesn't vim/emacs etc. make use of italic?	758	=head3 Why doesn't vim/emacs etc. make use of italic?
305		759
		760	See next entry.
		761
306	=item Why are the secondary screen-related options not working properly?	762	=head3 Why are the secondary screen-related options not working properly?
307		763
308	Make sure you are using C<TERM=rxvt-unicode>. Some pre-packaged	764	Make sure you are using C<TERM=rxvt-unicode>. Some pre-packaged
309	distributions (most notably Debian GNU/Linux) break rxvt-unicode	765	distributions (most notably Debian GNU/Linux) break rxvt-unicode
310	by setting C<TERM> to C<rxvt>, which doesn't have these extra	766	by setting C<TERM> to C<rxvt>, which doesn't have these extra
311	features. Unfortunately, some of these (most notably, again, Debian	767	features. Unfortunately, some of these (most notably, again, Debian
312	GNU/Linux) furthermore fail to even install the C<rxvt-unicode> terminfo	768	GNU/Linux) furthermore fail to even install the C<rxvt-unicode> terminfo
313	file, so you will need to install it on your own (See the question B<When	769	file, so you will need to install it on your own (See the question B<When
314	I log-in to another system it tells me about missing terminfo data?> on	770	I log-in to another system it tells me about missing terminfo data?> on
315	how to do this).	771	how to do this).
316		772
317	=item My numerical keypad acts weird and generates differing output?
318		773
319	Some Debian GNUL/Linux users seem to have this problem, although no	774	=head2 Encoding / Locale / Input Method Issues
320	specific details were reported so far. It is possible that this is caused
321	by the wrong C<TERM> setting, although the details of wether and how
322	this can happen are unknown, as C<TERM=rxvt> should offer a compatible
323	keymap. See the answer to the previous question, and please report if that
324	helped.
325		775
326	=item Rxvt-unicode does not seem to understand the selected encoding?	776	=head3 Rxvt-unicode does not seem to understand the selected encoding?
327		777
		778	See next entry.
		779
328	=item Unicode does not seem to work?	780	=head3 Unicode does not seem to work?
329		781
330	If you encounter strange problems like typing an accented character but	782	If you encounter strange problems like typing an accented character but
331	getting two unrelated other characters or similar, or if program output is	783	getting two unrelated other characters or similar, or if program output is
332	subtly garbled, then you should check your locale settings.	784	subtly garbled, then you should check your locale settings.
333		785
…		…
353		805
354	If nothing works and you are sure that everything is set correctly then	806	If nothing works and you are sure that everything is set correctly then
355	you will need to remember a little known fact: Some programs just don't	807	you will need to remember a little known fact: Some programs just don't
356	support locales :(	808	support locales :(
357		809
358	=item Why do some characters look so much different than others?	810	=head3 How does rxvt-unicode determine the encoding to use?
359		811
360	=item How does rxvt-unicode choose fonts?	812	See next entry.
361		813
362	Most fonts do not contain the full range of Unicode, which is	814	=head3 Is there an option to switch encodings?
363	fine. Chances are that the font you (or the admin/package maintainer of
364	your system/os) have specified does not cover all the characters you want
365	to display.
366		815
367	B<rxvt-unicode> makes a best-effort try at finding a replacement	816	Unlike some other terminals, rxvt-unicode has no encoding switch, and no
368	font. Often the result is fine, but sometimes the chosen font looks	817	specific "utf-8" mode, such as xterm. In fact, it doesn't even know about
369	bad/ugly/wrong. Some fonts have totally strange characters that don't	818	UTF-8 or any other encodings with respect to terminal I/O.
370	resemble the correct glyph at all, and rxvt-unicode lacks the artificial
371	intelligence to detect that a specific glyph is wrong: it has to believe
372	the font that the characters it claims to contain indeed look correct.
373		819
374	In that case, select a font of your taste and add it to the font list,	820	The reasons is that there exists a perfectly fine mechanism for selecting
375	e.g.:	821	the encoding, doing I/O and (most important) communicating this to all
376		822	applications so everybody agrees on character properties such as width
377	@@RXVT_NAME@@ -fn basefont,font2,font3...	823	and code number. This mechanism is the I<locale>. Applications not using
378		824	that info will have problems (for example, C<xterm> gets the width of
379	When rxvt-unicode sees a character, it will first look at the base	825	characters wrong as it uses it's own, locale-independent table under all
380	font. If the base font does not contain the character, it will go to the
381	next font, and so on. Specifying your own fonts will also speed up this
382	search and use less resources within rxvt-unicode and the X-server.
383
384	The only limitation is that none of the fonts may be larger than the base
385	font, as the base font defines the terminal character cell size, which
386	must be the same due to the way terminals work.
387
388	=item Why do some chinese characters look so different than others?
389
390	This is because there is a difference between script and language --
391	rxvt-unicode does not know which language the text that is output is,
392	as it only knows the unicode character codes. If rxvt-unicode first
393	sees a japanese/chinese character, it might choose a japanese font for
394	display. Subsequent japanese characters will use that font. Now, many
395	chinese characters aren't represented in japanese fonts, so when the first
396	non-japanese character comes up, rxvt-unicode will look for a chinese font
397	-- unfortunately at this point, it will still use the japanese font for
398	chinese characters that are also in the japanese font.
399
400	The workaround is easy: just tag a chinese font at the end of your font
401	list (see the previous question). The key is to view the font list as
402	a preference list: If you expect more japanese, list a japanese font
403	first. If you expect more chinese, put a chinese font first.
404
405	In the future it might be possible to switch language preferences at
406	runtime (the internal data structure has no problem with using different
407	fonts for the same character at the same time, but no interface for this
408	has been designed yet).
409
410	Until then, you might get away with switching fonts at runtime (see L<Can
411	I switch the fonts at runtime?> later in this document).
412
413	=item Why does rxvt-unicode sometimes leave pixel droppings?
414
415	Most fonts were not designed for terminal use, which means that character
416	size varies a lot. A font that is otherwise fine for terminal use might
417	contain some characters that are simply too wide. Rxvt-unicode will avoid
418	these characters. For characters that are just "a bit" too wide a special
419	"careful" rendering mode is used that redraws adjacent characters.
420
421	All of this requires that fonts do not lie about character sizes,
422	however: Xft fonts often draw glyphs larger than their acclaimed bounding
423	box, and rxvt-unicode has no way of detecting this (the correct way is to
424	ask for the character bounding box, which unfortunately is wrong in these
425	cases).	826	locales).
426		827
427	It's not clear (to me at least), wether this is a bug in Xft, freetype,	828	Rxvt-unicode uses the C<LC_CTYPE> locale category to select encoding. All
428	or the respective font. If you encounter this problem you might try using	829	programs doing the same (that is, most) will automatically agree in the
429	the C<-lsp> option to give the font more height. If that doesn't work, you	830	interpretation of characters.
430	might be forced to use a different font.
431		831
432	All of this is not a problem when using X11 core fonts, as their bounding	832	Unfortunately, there is no system-independent way to select locales, nor
433	box data is correct.	833	is there a standard on how locale specifiers will look like.
434		834
		835	On most systems, the content of the C<LC_CTYPE> environment variable
		836	contains an arbitrary string which corresponds to an already-installed
		837	locale. Common names for locales are C<en_US.UTF-8>, C<de_DE.ISO-8859-15>,
		838	C<ja_JP.EUC-JP>, i.e. C<language_country.encoding>, but other forms
		839	(i.e. C<de> or C<german>) are also common.
		840
		841	Rxvt-unicode ignores all other locale categories, and except for
		842	the encoding, ignores country or language-specific settings,
		843	i.e. C<de_DE.UTF-8> and C<ja_JP.UTF-8> are the normally same to
		844	rxvt-unicode.
		845
		846	If you want to use a specific encoding you have to make sure you start
		847	rxvt-unicode with the correct C<LC_CTYPE> category.
		848
		849	=head3 Can I switch locales at runtime?
		850
		851	Yes, using an escape sequence. Try something like this, which sets
		852	rxvt-unicode's idea of C<LC_CTYPE>.
		853
		854	printf '\e]701;%s\007' ja_JP.SJIS
		855
		856	See also the previous answer.
		857
		858	Sometimes this capability is rather handy when you want to work in
		859	one locale (e.g. C<de_DE.UTF-8>) but some programs don't support it
		860	(e.g. UTF-8). For example, I use this script to start C<xjdic>, which
		861	first switches to a locale supported by xjdic and back later:
		862
		863	printf '\e]701;%s\007' ja_JP.SJIS
		864	xjdic -js
		865	printf '\e]701;%s\007' de_DE.UTF-8
		866
		867	You can also use xterm's C<luit> program, which usually works fine, except
		868	for some locales where character width differs between program- and
		869	rxvt-unicode-locales.
		870
		871	=head3 My input method wants <some encoding> but I want UTF-8, what can I do?
		872
		873	You can specify separate locales for the input method and the rest of the
		874	terminal, using the resource C<imlocale>:
		875
		876	URxvt.imlocale: ja_JP.EUC-JP
		877
		878	Now you can start your terminal with C<LC_CTYPE=ja_JP.UTF-8> and still
		879	use your input method. Please note, however, that you will not be able to
		880	input characters outside C<EUC-JP> in a normal way then, as your input
		881	method limits you.
		882
		883	=head3 Rxvt-unicode crashes when the X Input Method changes or exits.
		884
		885	Unfortunately, this is unavoidable, as the XIM protocol is racy by
		886	design. Applications can avoid some crashes at the expense of memory
		887	leaks, and Input Methods can avoid some crashes by careful ordering at
		888	exit time. B<kinput2> (and derived input methods) generally succeeds,
		889	while B<SCIM> (or similar input methods) fails. In the end, however,
		890	crashes cannot be completely avoided even if both sides cooperate.
		891
		892	So the only workaround is not to kill your Input Method Servers.
		893
		894
		895	=head2 Operating Systems / Package Maintaining
		896
		897	=head3 I am using Debian GNU/Linux and have a problem...
		898
		899	The Debian GNU/Linux package of rxvt-unicode in sarge contains large
		900	patches that considerably change the behaviour of rxvt-unicode (but
		901	unfortunately this notice has been removed). Before reporting a bug to
		902	the original rxvt-unicode author please download and install the genuine
		903	version (L<http://software.schmorp.de#rxvt-unicode>) and try to reproduce
		904	the problem. If you cannot, chances are that the problems are specific to
		905	Debian GNU/Linux, in which case it should be reported via the Debian Bug
		906	Tracking System (use C<reportbug> to report the bug).
		907
		908	For other problems that also affect the Debian package, you can and
		909	probably should use the Debian BTS, too, because, after all, it's also a
		910	bug in the Debian version and it serves as a reminder for other users that
		911	might encounter the same issue.
		912
		913	=head3 I am maintaining rxvt-unicode for distribution/OS XXX, any recommendation?
		914
		915	You should build one binary with the default options. F<configure>
		916	now enables most useful options, and the trend goes to making them
		917	runtime-switchable, too, so there is usually no drawback to enbaling them,
		918	except higher disk and possibly memory usage. The perl interpreter should
		919	be enabled, as important functionality (menus, selection, likely more in
		920	the future) depends on it.
		921
		922	You should not overwrite the C<perl-ext-common> snd C<perl-ext> resources
		923	system-wide (except maybe with C<defaults>). This will result in useful
		924	behaviour. If your distribution aims at low memory, add an empty
		925	C<perl-ext-common> resource to the app-defaults file. This will keep the
		926	perl interpreter disabled until the user enables it.
		927
		928	If you can/want build more binaries, I recommend building a minimal
		929	one with C<--disable-everything> (very useful) and a maximal one with
		930	C<--enable-everything> (less useful, it will be very big due to a lot of
		931	encodings built-in that increase download times and are rarely used).
		932
		933	=head3 I need to make it setuid/setgid to support utmp/ptys on my OS, is this safe?
		934
		935	It should be, starting with release 7.1. You are encouraged to properly
		936	install urxvt with privileges necessary for your OS now.
		937
		938	When rxvt-unicode detects that it runs setuid or setgid, it will fork
		939	into a helper process for privileged operations (pty handling on some
		940	systems, utmp/wtmp/lastlog handling on others) and drop privileges
		941	immediately. This is much safer than most other terminals that keep
		942	privileges while running (but is more relevant to urxvt, as it contains
		943	things as perl interpreters, which might be "helpful" to attackers).
		944
		945	This forking is done as the very first within main(), which is very early
		946	and reduces possible bugs to initialisation code run before main(), or
		947	things like the dynamic loader of your system, which should result in very
		948	little risk.
		949
435	=item On Solaris 9, many line-drawing characters are too wide.	950	=head3 On Solaris 9, many line-drawing characters are too wide.
436		951
437	Seems to be a known bug, read	952	Seems to be a known bug, read
438	L<http://nixdoc.net/files/forum/about34198.html>. Some people use the	953	L<http://nixdoc.net/files/forum/about34198.html>. Some people use the
439	following ugly workaround to get non-double-wide-characters working:	954	following ugly workaround to get non-double-wide-characters working:
440		955
441	#define wcwidth(x) wcwidth(x) > 1 ? 1 : wcwidth(x)	956	#define wcwidth(x) wcwidth(x) > 1 ? 1 : wcwidth(x)
442		957
443	=item My Compose (Multi_key) key is no longer working.
444
445	The most common causes for this are that either your locale is not set
446	correctly, or you specified a B<preeditStyle> that is not supported by
447	your input method. For example, if you specified B<OverTheSpot> and
448	your input method (e.g. the default input method handling Compose keys)
449	does not support this (for instance because it is not visual), then
450	rxvt-unicode will continue without an input method.
451
452	In this case either do not specify a B<preeditStyle> or specify more than
453	one pre-edit style, such as B<OverTheSpot,Root,None>.
454
455	=item I cannot type C<Ctrl-Shift-2> to get an ASCII NUL character due to ISO 14755
456
457	Either try C<Ctrl-2> alone (it often is mapped to ASCII NUL even on
458	international keyboards) or simply use ISO 14755 support to your
459	advantage, typing <Ctrl-Shift-0> to get a ASCII NUL. This works for other
460	codes, too, such as C<Ctrl-Shift-1-d> to type the default telnet escape
461	character and so on.
462
463	=item How can I keep rxvt-unicode from using reverse video so much?
464
465	First of all, make sure you are running with the right terminal settings
466	(C<TERM=rxvt-unicode>), which will get rid of most of these effects. Then
467	make sure you have specified colours for italic and bold, as otherwise
468	rxvt-unicode might use reverse video to simulate the effect:
469
470	URxvt.colorBD: white
471	URxvt.colorIT: green
472
473	=item Some programs assume totally weird colours (red instead of blue), how can I fix that?
474
475	For some unexplainable reason, some rare programs assume a very weird
476	colour palette when confronted with a terminal with more than the standard
477	8 colours (rxvt-unicode supports 88). The right fix is, of course, to fix
478	these programs not to assume non-ISO colours without very good reasons.
479
480	In the meantime, you can either edit your C<rxvt-unicode> terminfo
481	definition to only claim 8 colour support or use C<TERM=rxvt>, which will
482	fix colours but keep you from using other rxvt-unicode features.
483
484	=item I am on FreeBSD and rxvt-unicode does not seem to work at all.	958	=head3 I am on FreeBSD and rxvt-unicode does not seem to work at all.
485		959
486	Rxvt-unicode requires the symbol C<__STDC_ISO_10646__> to be defined	960	Rxvt-unicode requires the symbol C<__STDC_ISO_10646__> to be defined
487	in your compile environment, or an implementation that implements it,	961	in your compile environment, or an implementation that implements it,
488	wether it defines the symbol or not. C<__STDC_ISO_10646__> requires that	962	wether it defines the symbol or not. C<__STDC_ISO_10646__> requires that
489	B<wchar_t> is represented as unicode.	963	B<wchar_t> is represented as unicode.
…		…
511		985
512	The rxvt-unicode author insists that the right way to fix this is in the	986	The rxvt-unicode author insists that the right way to fix this is in the
513	system libraries once and for all, instead of forcing every app to carry	987	system libraries once and for all, instead of forcing every app to carry
514	complete replacements for them :)	988	complete replacements for them :)
515		989
516	=item I use Solaris 9 and it doesn't compile/work/etc.	990	=head3 I use Solaris 9 and it doesn't compile/work/etc.
517		991
518	Try the diff in F<doc/solaris9.patch> as a base. It fixes the worst	992	Try the diff in F<doc/solaris9.patch> as a base. It fixes the worst
519	problems with C<wcwidth> and a compile problem.	993	problems with C<wcwidth> and a compile problem.
520		994
521	=item How can I use rxvt-unicode under cygwin?	995	=head3 How can I use rxvt-unicode under cygwin?
522		996
523	rxvt-unicode should compile and run out of the box on cygwin, using	997	rxvt-unicode should compile and run out of the box on cygwin, using
524	the X11 libraries that come with cygwin. libW11 emulation is no	998	the X11 libraries that come with cygwin. libW11 emulation is no
525	longer supported (and makes no sense, either, as it only supported a	999	longer supported (and makes no sense, either, as it only supported a
526	single font). I recommend starting the X-server in C<-multiwindow> or	1000	single font). I recommend starting the X-server in C<-multiwindow> or
…		…
529		1003
530	At the time of this writing, cygwin didn't seem to support any multi-byte	1004	At the time of this writing, cygwin didn't seem to support any multi-byte
531	encodings (you might try C<LC_CTYPE=C-UTF-8>), so you are likely limited	1005	encodings (you might try C<LC_CTYPE=C-UTF-8>), so you are likely limited
532	to 8-bit encodings.	1006	to 8-bit encodings.
533		1007
534	=item How does rxvt-unicode determine the encoding to use?
535
536	=item Is there an option to switch encodings?
537
538	Unlike some other terminals, rxvt-unicode has no encoding switch, and no
539	specific "utf-8" mode, such as xterm. In fact, it doesn't even know about
540	UTF-8 or any other encodings with respect to terminal I/O.
541
542	The reasons is that there exists a perfectly fine mechanism for selecting
543	the encoding, doing I/O and (most important) communicating this to all
544	applications so everybody agrees on character properties such as width
545	and code number. This mechanism is the I<locale>. Applications not using
546	that info will have problems (for example, C<xterm> gets the width of
547	characters wrong as it uses it's own, locale-independent table under all
548	locales).
549
550	Rxvt-unicode uses the C<LC_CTYPE> locale category to select encoding. All
551	programs doing the same (that is, most) will automatically agree in the
552	interpretation of characters.
553
554	Unfortunately, there is no system-independent way to select locales, nor
555	is there a standard on how locale specifiers will look like.
556
557	On most systems, the content of the C<LC_CTYPE> environment variable
558	contains an arbitrary string which corresponds to an already-installed
559	locale. Common names for locales are C<en_US.UTF-8>, C<de_DE.ISO-8859-15>,
560	C<ja_JP.EUC-JP>, i.e. C<language_country.encoding>, but other forms
561	(i.e. C<de> or C<german>) are also common.
562
563	Rxvt-unicode ignores all other locale categories, and except for
564	the encoding, ignores country or language-specific settings,
565	i.e. C<de_DE.UTF-8> and C<ja_JP.UTF-8> are the normally same to
566	rxvt-unicode.
567
568	If you want to use a specific encoding you have to make sure you start
569	rxvt-unicode with the correct C<LC_CTYPE> category.
570
571	=item Can I switch locales at runtime?
572
573	Yes, using an escape sequence. Try something like this, which sets
574	rxvt-unicode's idea of C<LC_CTYPE>.
575
576	printf '\e]701;%s\007' ja_JP.SJIS
577
578	See also the previous answer.
579
580	Sometimes this capability is rather handy when you want to work in
581	one locale (e.g. C<de_DE.UTF-8>) but some programs don't support it
582	(e.g. UTF-8). For example, I use this script to start C<xjdic>, which
583	first switches to a locale supported by xjdic and back later:
584
585	printf '\e]701;%s\007' ja_JP.SJIS
586	xjdic -js
587	printf '\e]701;%s\007' de_DE.UTF-8
588
589	You can also use xterm's C<luit> program, which usually works fine, except
590	for some locales where character width differs between program- and
591	rxvt-unicode-locales.
592
593	=item Can I switch the fonts at runtime?
594
595	Yes, using an escape sequence. Try something like this, which has the same
596	effect as using the C<-fn> switch, and takes effect immediately:
597
598	printf '\e]50;%s\007' "9x15bold,xft:Kochi Gothic"
599
600	This is useful if you e.g. work primarily with japanese (and prefer a
601	japanese font), but you have to switch to chinese temporarily, where
602	japanese fonts would only be in your way.
603
604	You can think of this as a kind of manual ISO-2022 switching.
605
606	=item Why do italic characters look as if clipped?
607
608	Many fonts have difficulties with italic characters and hinting. For
609	example, the otherwise very nicely hinted font C<xft:Bitstream Vera Sans
610	Mono> completely fails in it's italic face. A workaround might be to
611	enable freetype autohinting, i.e. like this:
612
613	URxvt.italicFont: xft:Bitstream Vera Sans Mono:italic:autohint=true
614	URxvt.boldItalicFont: xft:Bitstream Vera Sans Mono:bold:italic:autohint=true
615
616	=item My input method wants <some encoding> but I want UTF-8, what can I do?
617
618	You can specify separate locales for the input method and the rest of the
619	terminal, using the resource C<imlocale>:
620
621	URxvt.imlocale: ja_JP.EUC-JP
622
623	Now you can start your terminal with C<LC_CTYPE=ja_JP.UTF-8> and still
624	use your input method. Please note, however, that you will not be able to
625	input characters outside C<EUC-JP> in a normal way then, as your input
626	method limits you.
627
628	=item Rxvt-unicode crashes when the X Input Method changes or exits.
629
630	Unfortunately, this is unavoidable, as the XIM protocol is racy by
631	design. Applications can avoid some crashes at the expense of memory
632	leaks, and Input Methods can avoid some crashes by careful ordering at
633	exit time. B<kinput2> (and derived input methods) generally succeeds,
634	while B<SCIM> (or similar input methods) fails. In the end, however,
635	crashes cannot be completely avoided even if both sides cooperate.
636
637	So the only workaround is not to kill your Input Method Servers.
638
639	=item Rxvt-unicode uses gobs of memory, how can I reduce that?
640
641	Rxvt-unicode tries to obey the rule of not charging you for something you
642	don't use. One thing you should try is to configure out all settings that
643	you don't need, for example, Xft support is a resource hog by design,
644	when used. Compiling it out ensures that no Xft font will be loaded
645	accidentally when rxvt-unicode tries to find a font for your characters.
646
647	Also, many people (me included) like large windows and even larger
648	scrollback buffers: Without C<--enable-unicode3>, rxvt-unicode will use
649	6 bytes per screen cell. For a 160x?? window this amounts to almost a
650	kilobyte per line. A scrollback buffer of 10000 lines will then (if full)
651	use 10 Megabytes of memory. With C<--enable-unicode3> it gets worse, as
652	rxvt-unicode then uses 8 bytes per screen cell.
653
654	=item Can I speed up Xft rendering somehow?
655
656	Yes, the most obvious way to speed it up is to avoid Xft entirely, as
657	it is simply slow. If you still want Xft fonts you might try to disable
658	antialiasing (by appending C<:antialias=false>), which saves lots of
659	memory and also speeds up rendering considerably.
660
661	=item Rxvt-unicode doesn't seem to anti-alias its fonts, what is wrong?
662
663	Rxvt-unicode will use whatever you specify as a font. If it needs to
664	fall back to it's default font search list it will prefer X11 core
665	fonts, because they are small and fast, and then use Xft fonts. It has
666	antialiasing disabled for most of them, because the author thinks they
667	look best that way.
668
669	If you want antialiasing, you have to specify the fonts manually.
670
671	=item Mouse cut/paste suddenly no longer works.
672
673	Make sure that mouse reporting is actually turned off since killing
674	some editors prematurely may leave the mouse in mouse report mode. I've
675	heard that tcsh may use mouse reporting unless it otherwise specified. A
676	quick check is to see if cut/paste works when the Alt or Shift keys are
677	depressed.
678
679	=item What's with this bold/blink stuff?
680
681	If no bold colour is set via C<colorBD:>, bold will invert text using the
682	standard foreground colour.
683
684	For the standard background colour, blinking will actually make the
685	text blink when compiled with C<--enable-blinking>. with standard
686	colours. Without C<--enable-blinking>, the blink attribute will be
687	ignored.
688
689	On ANSI colours, bold/blink attributes are used to set high-intensity
690	foreground/background colors.
691
692	color0-7 are the low-intensity colors.
693
694	color8-15 are the corresponding high-intensity colors.
695
696	=item I don't like the screen colors. How do I change them?
697
698	You can change the screen colors at run-time using F<~/.Xdefaults>
699	resources (or as long-options).
700
701	Here are values that are supposed to resemble a VGA screen,
702	including the murky brown that passes for low-intensity yellow:
703
704	URxvt.color0: #000000
705	URxvt.color1: #A80000
706	URxvt.color2: #00A800
707	URxvt.color3: #A8A800
708	URxvt.color4: #0000A8
709	URxvt.color5: #A800A8
710	URxvt.color6: #00A8A8
711	URxvt.color7: #A8A8A8
712
713	URxvt.color8: #000054
714	URxvt.color9: #FF0054
715	URxvt.color10: #00FF54
716	URxvt.color11: #FFFF54
717	URxvt.color12: #0000FF
718	URxvt.color13: #FF00FF
719	URxvt.color14: #00FFFF
720	URxvt.color15: #FFFFFF
721
722	And here is a more complete set of non-standard colors described (not by
723	me) as "pretty girly".
724
725	URxvt.cursorColor: #dc74d1
726	URxvt.pointerColor: #dc74d1
727	URxvt.background: #0e0e0e
728	URxvt.foreground: #4ad5e1
729	URxvt.color0: #000000
730	URxvt.color8: #8b8f93
731	URxvt.color1: #dc74d1
732	URxvt.color9: #dc74d1
733	URxvt.color2: #0eb8c7
734	URxvt.color10: #0eb8c7
735	URxvt.color3: #dfe37e
736	URxvt.color11: #dfe37e
737	URxvt.color5: #9e88f0
738	URxvt.color13: #9e88f0
739	URxvt.color6: #73f7ff
740	URxvt.color14: #73f7ff
741	URxvt.color7: #e1dddd
742	URxvt.color15: #e1dddd
743
744	=item How can I start @@RXVT_NAME@@d in a race-free way?
745
746	Try C<@@RXVT_NAME@@d -f -o>, which tells @@RXVT_NAME@@d to open the
747	display, create the listening socket and then fork.
748
749	=item What's with the strange Backspace/Delete key behaviour?
750
751	Assuming that the physical Backspace key corresponds to the
752	BackSpace keysym (not likely for Linux ... see the following
753	question) there are two standard values that can be used for
754	Backspace: C<^H> and C<^?>.
755
756	Historically, either value is correct, but rxvt-unicode adopts the debian
757	policy of using C<^?> when unsure, because it's the one only only correct
758	choice :).
759
760	Rxvt-unicode tries to inherit the current stty settings and uses the value
761	of `erase' to guess the value for backspace. If rxvt-unicode wasn't
762	started from a terminal (say, from a menu or by remote shell), then the
763	system value of `erase', which corresponds to CERASE in <termios.h>, will
764	be used (which may not be the same as your stty setting).
765
766	For starting a new rxvt-unicode:
767
768	# use Backspace = ^H
769	$ stty erase ^H
770	$ @@RXVT_NAME@@
771
772	# use Backspace = ^?
773	$ stty erase ^?
774	$ @@RXVT_NAME@@
775
776	Toggle with C<ESC [ 36 h> / C<ESC [ 36 l>.
777
778	For an existing rxvt-unicode:
779
780	# use Backspace = ^H
781	$ stty erase ^H
782	$ echo -n "^[[36h"
783
784	# use Backspace = ^?
785	$ stty erase ^?
786	$ echo -n "^[[36l"
787
788	This helps satisfy some of the Backspace discrepancies that occur, but
789	if you use Backspace = C<^H>, make sure that the termcap/terminfo value
790	properly reflects that.
791
792	The Delete key is a another casualty of the ill-defined Backspace problem.
793	To avoid confusion between the Backspace and Delete keys, the Delete
794	key has been assigned an escape sequence to match the vt100 for Execute
795	(C<ESC [ 3 ~>) and is in the supplied termcap/terminfo.
796
797	Some other Backspace problems:
798
799	some editors use termcap/terminfo,
800	some editors (vim I'm told) expect Backspace = ^H,
801	GNU Emacs (and Emacs-like editors) use ^H for help.
802
803	Perhaps someday this will all be resolved in a consistent manner.
804
805	=item I don't like the key-bindings. How do I change them?
806
807	There are some compile-time selections available via configure. Unless
808	you have run "configure" with the C<--disable-resources> option you can
809	use the `keysym' resource to alter the keystrings associated with keysyms.
810
811	Here's an example for a URxvt session started using C<@@RXVT_NAME@@ -name URxvt>
812
813	URxvt.keysym.Home: \033[1~
814	URxvt.keysym.End: \033[4~
815	URxvt.keysym.C-apostrophe: \033<C-'>
816	URxvt.keysym.C-slash: \033<C-/>
817	URxvt.keysym.C-semicolon: \033<C-;>
818	URxvt.keysym.C-grave: \033<C-`>
819	URxvt.keysym.C-comma: \033<C-,>
820	URxvt.keysym.C-period: \033<C-.>
821	URxvt.keysym.C-0x60: \033<C-`>
822	URxvt.keysym.C-Tab: \033<C-Tab>
823	URxvt.keysym.C-Return: \033<C-Return>
824	URxvt.keysym.S-Return: \033<S-Return>
825	URxvt.keysym.S-space: \033<S-Space>
826	URxvt.keysym.M-Up: \033<M-Up>
827	URxvt.keysym.M-Down: \033<M-Down>
828	URxvt.keysym.M-Left: \033<M-Left>
829	URxvt.keysym.M-Right: \033<M-Right>
830	URxvt.keysym.M-C-0: list \033<M-C- 0123456789 >
831	URxvt.keysym.M-C-a: list \033<M-C- abcdefghijklmnopqrstuvwxyz >
832	URxvt.keysym.F12: command:\033]701;zh_CN.GBK\007
833
834	See some more examples in the documentation for the B<keysym> resource.
835
836	=item I'm using keyboard model XXX that has extra Prior/Next/Insert keys.
837	How do I make use of them? For example, the Sun Keyboard type 4
838	has the following mappings that rxvt-unicode doesn't recognize.
839
840	KP_Insert == Insert
841	F22 == Print
842	F27 == Home
843	F29 == Prior
844	F33 == End
845	F35 == Next
846
847	Rather than have rxvt-unicode try to accommodate all the various possible
848	keyboard mappings, it is better to use `xmodmap' to remap the keys as
849	required for your particular machine.
850
851	=item How do I distinguish wether I'm running rxvt-unicode or a regular xterm?
852	I need this to decide about setting colors etc.
853
854	rxvt and rxvt-unicode always export the variable "COLORTERM", so you can
855	check and see if that is set. Note that several programs, JED, slrn,
856	Midnight Commander automatically check this variable to decide whether or
857	not to use color.
858
859	=item How do I set the correct, full IP address for the DISPLAY variable?
860
861	If you've compiled rxvt-unicode with DISPLAY_IS_IP and have enabled
862	insecure mode then it is possible to use the following shell script
863	snippets to correctly set the display. If your version of rxvt-unicode
864	wasn't also compiled with ESCZ_ANSWER (as assumed in these snippets) then
865	the COLORTERM variable can be used to distinguish rxvt-unicode from a
866	regular xterm.
867
868	Courtesy of Chuck Blake <cblake@BBN.COM> with the following shell script
869	snippets:
870
871	# Bourne/Korn/POSIX family of shells:
872	[ ${TERM:-foo} = foo ] && TERM=xterm # assume an xterm if we don't know
873	if [ ${TERM:-foo} = xterm ]; then
874	stty -icanon -echo min 0 time 15 # see if enhanced rxvt or not
875	echo -n '^[Z'
876	read term_id
877	stty icanon echo
878	if [ ""${term_id} = '^[[?1;2C' -a ${DISPLAY:-foo} = foo ]; then
879	echo -n '^[[7n' # query the rxvt we are in for the DISPLAY string
880	read DISPLAY # set it in our local shell
881	fi
882	fi
883
884	=item How do I compile the manual pages for myself?
885
886	You need to have a recent version of perl installed as F</usr/bin/perl>,
887	one that comes with F<pod2man>, F<pod2text> and F<pod2html>. Then go to
888	the doc subdirectory and enter C<make alldoc>.
889
890	=item My question isn't answered here, can I ask a human?
891
892	Before sending me mail, you could go to IRC: C<irc.freenode.net>,
893	channel C<#rxvt-unicode> has some rxvt-unicode enthusiasts that might be
894	interested in learning about new and exciting problems (but not FAQs :).
895
896	=back
897
898	=head1 RXVT TECHNICAL REFERENCE	1008	=head1 RXVT-UNICODE TECHNICAL REFERENCE
899		1009
900	=head1 DESCRIPTION	1010	=head1 DESCRIPTION
901		1011
902	The rest of this document describes various technical aspects of	1012	The rest of this document describes various technical aspects of
903	B<rxvt-unicode>. First the description of supported command sequences,	1013	B<rxvt-unicode>. First the description of supported command sequences,
…		…
1669	B<< C<Ps = 12> >> Change colour of text cursor foreground to B<< C<Pt> >>	1779	B<< C<Ps = 12> >> Change colour of text cursor foreground to B<< C<Pt> >>
1670	B<< C<Ps = 13> >> Change colour of mouse foreground to B<< C<Pt> >>	1780	B<< C<Ps = 13> >> Change colour of mouse foreground to B<< C<Pt> >>
1671	B<< C<Ps = 17> >> Change colour of highlight characters to B<< C<Pt> >>	1781	B<< C<Ps = 17> >> Change colour of highlight characters to B<< C<Pt> >>
1672	B<< C<Ps = 18> >> Change colour of bold characters to B<< C<Pt> >> [deprecated, see 706]	1782	B<< C<Ps = 18> >> Change colour of bold characters to B<< C<Pt> >> [deprecated, see 706]
1673	B<< C<Ps = 19> >> Change colour of underlined characters to B<< C<Pt> >> [deprecated, see 707]	1783	B<< C<Ps = 19> >> Change colour of underlined characters to B<< C<Pt> >> [deprecated, see 707]
1674	B<< C<Ps = 20> >> Change default background to B<< C<Pt> >>	1784	B<< C<Ps = 20> >> Change background pixmap parameters (see section XPM) (Compile XPM).
1675	B<< C<Ps = 39> >> Change default foreground colour to B<< C<Pt> >>.	1785	B<< C<Ps = 39> >> Change default foreground colour to B<< C<Pt> >>.
1676	B<< C<Ps = 46> >> Change Log File to B<< C<Pt> >> I<unimplemented>	1786	B<< C<Ps = 46> >> Change Log File to B<< C<Pt> >> I<unimplemented>
1677	B<< C<Ps = 49> >> Change default background colour to B<< C<Pt> >>.	1787	B<< C<Ps = 49> >> Change default background colour to B<< C<Pt> >>.
1678	B<< C<Ps = 50> >> Set fontset to B<< C<Pt> >>, with the following special values of B<< C<Pt> >> (B<rxvt>) B<< C<#+n> >> change up B<< C<n> >> B<< C<#-n> >> change down B<< C<n> >> if B<< C<n> >> is missing of 0, a value of 1 is used I<empty> change to font0 B<< C<n> >> change to font B<< C<n> >>	1788	B<< C<Ps = 50> >> Set fontset to B<< C<Pt> >>, with the following special values of B<< C<Pt> >> (B<rxvt>) B<< C<#+n> >> change up B<< C<n> >> B<< C<#-n> >> change down B<< C<n> >> if B<< C<n> >> is missing of 0, a value of 1 is used I<empty> change to font0 B<< C<n> >> change to font B<< C<n> >>
1679	B<< C<Ps = 55> >> Log all scrollback buffer and all of screen to B<< C<Pt> >>	1789	B<< C<Ps = 55> >> Log all scrollback buffer and all of screen to B<< C<Pt> >>
1680	B<< C<Ps = 701> >> Change current locale to B<< C<Pt> >>, or, if B<< C<Pt> >> is B<< C<?> >>, return the current locale (Compile frills).	1790	B<< C<Ps = 701> >> Change current locale to B<< C<Pt> >>, or, if B<< C<Pt> >> is B<< C<?> >>, return the current locale (Compile frills).
		1791	B<< C<Ps = 702> >> Request version if B<< C<Pt> >> is B<< C<?> >>, returning C<rxvt-unicode>, the resource name, the major and minor version numbers, e.g. C<ESC ] 702 ; rxvt-unicode ; urxvt ; 7 ; 4 ST>.
1681	B<< C<Ps = 704> >> Change colour of italic characters to B<< C<Pt> >>	1792	B<< C<Ps = 704> >> Change colour of italic characters to B<< C<Pt> >>
1682	B<< C<Ps = 705> >> Change background pixmap tint colour to B<< C<Pt> >> (Compile transparency).	1793	B<< C<Ps = 705> >> Change background pixmap tint colour to B<< C<Pt> >> (Compile transparency).
1683	B<< C<Ps = 706> >> Change colour of bold characters to B<< C<Pt> >>	1794	B<< C<Ps = 706> >> Change colour of bold characters to B<< C<Pt> >>
1684	B<< C<Ps = 707> >> Change colour of underlined characters to B<< C<Pt> >>	1795	B<< C<Ps = 707> >> Change colour of underlined characters to B<< C<Pt> >>
1685	B<< C<Ps = 710> >> Set normal fontset to B<< C<Pt> >>. Same as C<Ps = 50>.	1796	B<< C<Ps = 710> >> Set normal fontset to B<< C<Pt> >>. Same as C<Ps = 50>.
…		…
1800	=begin table	1911	=begin table
1801		1912
1802	4 Shift	1913	4 Shift
1803	8 Meta	1914	8 Meta
1804	16 Control	1915	16 Control
1805	32 Double Click I<(Rxvt extension)>	1916	32 Double Click I<(rxvt extension)>
1806		1917
1807	=end table	1918	=end table
1808		1919
1809	Col = B<< C<< <x> - SPACE >> >>	1920	Col = B<< C<< <x> - SPACE >> >>
1810		1921
…		…
1948	alternative input methods (e.g. kinput2) and will also correctly	2059	alternative input methods (e.g. kinput2) and will also correctly
1949	set up the input for people using dead keys or compose keys.	2060	set up the input for people using dead keys or compose keys.
1950		2061
1951	=item --enable-unicode3 (default: off)	2062	=item --enable-unicode3 (default: off)
1952		2063
		2064	Recommended to stay off unless you really need non-BMP characters.
		2065
1953	Enable direct support for displaying unicode codepoints above	2066	Enable direct support for displaying unicode codepoints above
1954	65535 (the basic multilingual page). This increases storage	2067	65535 (the basic multilingual page). This increases storage
1955	requirements per character from 2 to 4 bytes. X11 fonts do not yet	2068	requirements per character from 2 to 4 bytes. X11 fonts do not yet
1956	support these extra characters, but Xft does.	2069	support these extra characters, but Xft does.
1957		2070
…		…
1967	composite characters. This is required for proper viewing of text	2080	composite characters. This is required for proper viewing of text
1968	where accents are encoded as seperate unicode characters. This is	2081	where accents are encoded as seperate unicode characters. This is
1969	done by using precomposited characters when available or creating	2082	done by using precomposited characters when available or creating
1970	new pseudo-characters when no precomposed form exists.	2083	new pseudo-characters when no precomposed form exists.
1971		2084
1972	Without --enable-unicode3, the number of additional precomposed characters	2085	Without --enable-unicode3, the number of additional precomposed
1973	is rather limited (2048, if this is full, rxvt-unicode will use the	2086	characters is somewhat limited (the 6400 private use characters will be
1974	private use area, extending the number of combinations to 8448). With
1975	--enable-unicode3, no practical limit exists.	2087	(ab-)used). With --enable-unicode3, no practical limit exists.
1976		2088
1977	This option will also enable storage (but not display) of characters	2089	This option will also enable storage (but not display) of characters
1978	beyond plane 0 (>65535) when --enable-unicode3 was not specified.	2090	beyond plane 0 (>65535) when --enable-unicode3 was not specified.
1979		2091
1980	The combining table also contains entries for arabic presentation forms,	2092	The combining table also contains entries for arabic presentation forms,
1981	but these are not currently used. Bug me if you want these to be used (and	2093	but these are not currently used. Bug me if you want these to be used (and
1982	tell me how these are to be used...).	2094	tell me how these are to be used...).
1983		2095
1984	=item --enable-fallback(=CLASS) (default: Rxvt)	2096	=item --enable-fallback(=CLASS) (default: Rxvt)
1985		2097
1986	When reading resource settings, also read settings for class CLASS. To disable resource fallback use --disable-fallback.	2098	When reading resource settings, also read settings for class CLASS. To
		2099	disable resource fallback use --disable-fallback.
1987		2100
1988	=item --with-res-name=NAME (default: urxvt)	2101	=item --with-res-name=NAME (default: urxvt)
1989		2102
1990	Use the given name as default application name when	2103	Use the given name as default application name when
1991	reading resources. Specify --with-res-name=rxvt to replace rxvt.	2104	reading resources. Specify --with-res-name=rxvt to replace rxvt.
…		…
2081		2194
2082	MWM-hints	2195	MWM-hints
2083	EWMH-hints (pid, utf8 names) and protocols (ping)	2196	EWMH-hints (pid, utf8 names) and protocols (ping)
2084	seperate underline colour (-underlineColor)	2197	seperate underline colour (-underlineColor)
2085	settable border widths and borderless switch (-w, -b, -bl)	2198	settable border widths and borderless switch (-w, -b, -bl)
		2199	visual depth selection (-depth)
2086	settable extra linespacing /-lsp)	2200	settable extra linespacing /-lsp)
2087	iso-14755-2 and -3, and visual feedback	2201	iso-14755-2 and -3, and visual feedback
2088	backindex and forwardindex escape sequence
2089	window op and some xterm/OSC escape sequences
2090	tripleclickwords (-tcw)	2202	tripleclickwords (-tcw)
2091	settable insecure mode (-insecure)	2203	settable insecure mode (-insecure)
2092	keysym remapping support	2204	keysym remapping support
2093	cursor blinking and underline cursor (-cb, -uc)	2205	cursor blinking and underline cursor (-cb, -uc)
2094	XEmbed support (-embed)	2206	XEmbed support (-embed)
2095	user-pty (-pty-fd)	2207	user-pty (-pty-fd)
2096	hold on exit (-hold)	2208	hold on exit (-hold)
2097	skip builtin block graphics (-sbg)	2209	skip builtin block graphics (-sbg)
		2210
		2211	It also enabled some non-essential features otherwise disabled, such as:
		2212
		2213	some round-trip time optimisations
		2214	nearest color allocation on pseudocolor screens
		2215	UTF8_STRING supporr for selection
2098	sgr modes 90..97 and 100..107	2216	sgr modes 90..97 and 100..107
		2217	backindex and forwardindex escape sequences
		2218	view change/zero scorllback esacpe sequences
		2219	locale switching escape sequence
		2220	window op and some xterm/OSC escape sequences
		2221	rectangular selections
		2222	trailing space removal for selections
		2223	verbose X error handling
2099		2224
2100	=item --enable-iso14755 (default: on)	2225	=item --enable-iso14755 (default: on)
2101		2226
2102	Enable extended ISO 14755 support (see @@RXVT_NAME@@(1), or	2227	Enable extended ISO 14755 support (see @@RXVT_NAME@@(1), or
2103	F<doc/rxvt.1.txt>). Basic support (section 5.1) is enabled by	2228	F<doc/rxvt.1.txt>). Basic support (section 5.1) is enabled by
…		…
2146		2271
2147	=item --enable-pointer-blank (default: on)	2272	=item --enable-pointer-blank (default: on)
2148		2273
2149	Add support to have the pointer disappear when typing or inactive.	2274	Add support to have the pointer disappear when typing or inactive.
2150		2275
2151	=item --enable-perl (default: off)	2276	=item --enable-perl (default: on)
2152		2277
2153	Enable an embedded perl interpreter. See the B<@@RXVT_NAME@@perl(3)>	2278	Enable an embedded perl interpreter. See the B<@@RXVT_NAME@@perl(3)>
2154	manpage (F<doc/rxvtperl.txt>) for more info on this feature, or the files	2279	manpage (F<doc/rxvtperl.txt>) for more info on this feature, or the files
2155	in F<src/perl-ext/> for the extensions that are installed by default. The	2280	in F<src/perl-ext/> for the extensions that are installed by default. The
2156	perl interpreter that is used can be specified via the C<PERL> environment	2281	perl interpreter that is used can be specified via the C<PERL> environment

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